<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    #target {
      width: 100px;
      height: 100px;
      background: orange;
    }
    #target2 {
      width: 100px;
      height: 100px;
      background: red;
    }
  </style>
</head>
<body>
  <div id="target"></div>
  <div id="target2"></div>
  <script src="./index.js"></script>
</body>
</html>